From: Ronnie Angello (ronnie.angello@gmail.com)
Date: Sat May 12 2007 - 08:47:55 ART
ip prefix-list NETBB1 seq 5 permit 190.0.0.0/8 le 32
This means permit any prefix with the first octet of 190 and with any mask.
If you just wanted to permit 190.0.x.x, then you would need...
ip prefix-list NETBB1 seq 5 permit 190.0.0.0/16 le 32
Make sense? This post really helped me understand prefix-lists.
http://www.groupstudy.com/archives/ccielab/200404/msg00539.html
On 5/12/07, H Wong <hwmwm123@yahoo.com> wrote:
>
> Hello,
>
> I'm running into problems while doing some route filtering. I'm stuck with
> this issue for a while and wondering if someone can take a look at it and
> help out. I have the following topology:
>
>
> R1-------------------------------R6--------------------------------------BB1
>
> Interfaces between R1 & R6 are in EIGRP 10
> interfaces between R6 & BB1 are in EIGRP 100
>
> I have the following routes coming from BB1 into EIGRP100:
>
> 190.2.2.0/24
> 190.3.3.0/24
> 190.1.1.0/24
>
> I want configure only to receive all subnets with the prefix 190.0.0.0/8.
>
> I have configured the following on R6:
>
> router eigrp 10
> redistribute eigrp 100 metric 1544 2000 255 1 1500
> no auto-summary
> !
> router eigrp 100
> redistribute eigrp 10 metric 1544 2000 255 1 1500
> distribute-list route-map NBB1 in FastEthernet0/1.18
> no auto-summary
> !
> route-map NBB1 permit 10
> match ip address prefix-list NETBB1
>
> ip prefix-list NETBB1 seq 5 permit 190.0.0.0/8 le 32
>
>
> Still when I go and check on R1 I see all the 190.x.x.x prefixes from BB1.
>
> R1# sh ip route eigrp
>
> D EX 190.2.2.0/24 [170/2172416] via 17.17.9.6, 00:16:56, FastEthernet0/1
> D EX 190.3.3.0/24 [170/2172416] via 17.17.9.6, 00:16:56, FastEthernet0/1
> D EX 190.1.1.0/24 [170/2172416] via 17.17.9.6, 00:16:56, FastEthernet0/1
>
>
> Is there anything that I'm doing wrong? Please let me know.
>
> Thanks,
> --HW
>
>
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-- Ronald Angello CCIE #17846
This archive was generated by hypermail 2.1.4 : Fri Jun 01 2007 - 06:55:20 ART